This building block includes development and introduction of sustainable aquaculture and livelihoods diversification (seaweed cultivation, crab & shrimp farming). –10 community groups are supported through farmer field schools and by providing resources to initiate new aquaculture management practices and livelihood diversification. –these improved practices will directly revitalize 300 ha of land for 300 households (based on a conservative estimate of 1 ha per household), increasing average aquaculture productivity with 50%, by adjusting pond lay-out and management, by reducing fertilizer and pesticide inputs, by making optimal use of mangrove services like water purification and by diversifying livelihoods activities. Based on experiences in Indonesia and Vietnam, income derived from the ponds is expected to have risen to 5000 EUR ha by year 5. –community funds will be established that: i) absorb savings from increased pond productivity (5%) in support of long-term coastal belt maintenance and up-scaling of sustainable land-use management measures beyond the project lifetime; ii) can absorb government support to local communities for coastal protection and sustainable land-use.